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Abkürzungen

CD Differenzierungsantigen, engl. cluster determinant EDTA Ethylendiamintetraazetat

EGFP Verstärkte Variante des grünen fluoreszierenden Proteins, engl. enhanced green fluorescent protein

FACS Fluoreszenz gesteuerte Zellsortierung, engl. Fluorescence-activated cell sorting

FCS fötales Kälberserum, engl. fetal calf serum FITC Fluoresceinisothiocyanat

GFP grünes fluoreszierendes Protein

GZL Globoidzellen-Leukodystrophie, Krabbe-Krankheit

HIV Humanes Immunodefizienzvirus

Iba1 ionisiertes Calcium bindendes Adaptermolekül 1

ICAM-1 Interzelluläres Zelladhäsionsmolekül 1, engl. intercellular cell adhesion molecule 1

IL Interleukin

iNOS induzierbare Stickstoffmonoxidsynthetase

KHCO3 Kaliumhydrogencarbonat

KMT Knochenmarktransplantation

MCP Monozyten-Chemoanziehendes Protein, engl. monocyte chemoattractant protein

MHC Hauptgewebehistokompatibilitätskomplex, engl. major histocompatibility complex

NaCl Natriumchlorid, physiologische Kochsalzlösung

NH4Cl Ammoniumchlorid

NO Stickstoffmonoxid

NOS Stickstoffmonoxidsynthetase

PBS phosphatgepufferte natürliche Kochsalzlösung, engl. phosphate buffered saline

PE Phycoerythrin PFA Paraformaldehyd

rHuIL-6 rekombinantes humanes Interleukin 6

rMuIL-3 rekombinantes murines Interleukin 3

rSCF Stammzellfaktor aus der Ratte, engl. rat stem cell factor ZKM Zellkulturmedium

ZNS Zentralnervensystem

Danksagung

Im Laufe dieser Dissertation habe ich die Laborforschung mit all ihren Höhen und Tiefen kennengelernt. Zum Gelingen des Projektes haben viele Menschen beigetragen.

Herrn Prof. Dr. Ulrich Dirnagl danke ich für die Überlassung des Themas und die jederzeit und in jeder Hinsicht vorbildlich gewährte Unterstützung. Gleiches gilt für Herrn PD Dr. Josef Priller, der mich in der alltäglichen Arbeit betreute.

Während der experimentellen Phase habe ich eng mit meinem Freund und Mitdoktoranden Matthias Böntert zusammengearbeitet. In der unmittelbaren Arbeit habe ich vieles von meinem Mitdoktoranden Francisco Fernandez Klett gelernt. Dabei habe ich auch von Vorarbeiten meines Vorgängers, Herrn Matthias Heinze, profitiert. Allen dreien danke ich für die gute Zusammenarbeit in der „AG Grün“.

Herrn Dr. Konstantin Prass spreche ich meinen Dank und meine Anerkennung für die sorgfältig ausgeführten Ischämieoperationen aus.

Frau Dr. Dorette Freyer und Frau Renate Gusinda haben mir das ABC der Zellkultur vermittelt und bei kleinen und großen Problemen mit ihrer Erfahrung Hilfestellung leisten können, wofür ich beiden dankbar bin.

Herrn Dr. Bauke A. de Boer, zur Zeit der Experimente am Deutschen Rheumaforschungszentrum tätig, danke ich für die Einarbeitung in die Durchflusszytometrie, seinem Kollegen Dr. Thoralf Kaiser für die Unterstützung bei der Zellsortierung.

Herrn Dr. Werner Zuschratter vom Institut für Neurobiologie in Magdeburg bin ich dankbar für die dreidimensionale Rekonstruktion einer GFP-exprimierenden Mikrogliazelle.

Herrn PD Dr. Ingo Bechmann vom Institut für Anatomie der Charité spreche ich meinen Dank für produktive Diskussionen im Zusammenhang mit den Themenbereichen Quantifizierung und Immunhistochemie aus.

Der Charité danke ich für ein Forschungsstipendium, ohne welches ich mich diesem Projekt nicht so intensiv hätte widmen können.

Lebenslauf

Tim Wehner

18. Mai 1972 Geboren in Georgsmarienhütte, Landkreis Osnabrück Eltern: Doris Wehner, technische Zeichnerin

Klaus Wehner, Ingenieur

Schule

1978 – 1982 Grundschule Schledehausen

1982 – 1984 Orientierungsstufe Dom Osnabrück

1984 – 1991 Gymnasium Carolinum Osnabrück, Abitur am 31. Mai 1991

Zivildienst

Sept. 1991 – Okt. 1992 Krankenpflegehelfer, Marienhospital Osnabrück

Studium der Humanmedizin

Okt. 1992 – März 1994 Universität Kiel, unterbrochen durch eine schwere Erkrankung April 1994 – April 2001 Universität Witten/Herdecke

Aug. 1997 – Juni 1998 University of Aberdeen, Scotland;

Auslandsstipendium der Studienstiftung des deutschen Volkes Mai 1999 – April 2000 Experimenteller Teil der Dissertation in der Abteilung für

Experimentelle Neurologie der Charité, assoziiertes Mitglied im Graduiertenkolleg 238 „Schadensmechanismen im

Nervensystem“

Mai 2000 – März 2001 Praktisches Jahr

Innere Medizin MetroHealth Medical Center, Cleveland, Ohio, USA (Prof. G. Richard Olds, M. D.)

Neurologie Klinikum Wuppertal

(Prof. Dr. Johannes Jörg)

Chirurgie Evangelisches Krankenhaus Witten

Examina

April 1996 Ärztliche Vorprüfung

April 1997 1. Abschnitt der ärztlichen Prüfung April 1999 2. Abschnitt der ärztlichen Prüfung April 2001 3. Abschnitt der ärztlichen Prüfung

Juni 1997 USMLE Step 1

Juli 2001 USMLE Step 2 und „Clinical Skills Assessment“

Dezember 2001 USMLE Step 3

Auszeichnungen

1997-2001 Stipendiat der Studienstiftung des deutschen Volkes

Beruflicher Werdegang

Juli 2001 – Juni 2002 Arzt/Wissenschaftlicher Mitarbeiter in der Arbeitsgruppe

„Modellstudiengang“ an der Fakultät für Medizin der Universität Witten/Herdecke (Dr. Wilhelm E. Vermaasen)

Juni 2002 Beginn der Weiterbildung in Neurologie an der Case Western Reserve University / MetroHealth Medical Center (obligatorische “Internship” in Innerer Medizin) und an der Cleveland Clinic Foundation; Cleveland, Ohio, USA

Publikationsliste

Wehner, T.; Böntert, M.; Eyüpoglu, I.; Prass, K.; Klett, F. F.; Heinze, M.; Bechmann, I.;

Nitsch, R.; Kirchhoff, F.; Kettenmann, H.; Dirnagl, U.; Priller J. Bone marrow-derived cells expressing GFP under the control of the glial fibrillary acidic protein promoter do not differentiate into astrocytes in vitro and in vivo. Submitted.

Priller, J.; Flügel, A.; Wehner, T.; Böntert, M.; Haas, C. A.; Prinz, M.; Fernandez Klett, F.;

Prass, K.; Bechmann, I.; de Boer, B. A.; Frotscher, M.; Kreutzberg, G. W.; Persons, D. A.;

Dirnagl, U. (2001). Targeting gene-modified hematopoietic cells to the central nervous system: Use of green fluorescent protein uncovers microglial engraftment. Nat Med 7: 1356-1361.

Bechmann, I.; Priller, J.; Kovac, A.; Böntert, M.; Wehner, T.; Klett, F. F.; Bohsung, J.;

Stuschke, M.; Dirnagl, U.; Nitsch, R. (2001). Immune surveillance of mouse brain perivascular spaces by blood-borne macrophages. Eur J Neurosci 14: 1651-1658.

Kongressbeiträge

Wehner, T.; Böntert, M.; Eyüepoglu, I.; Fernandez, F.; Prass, K.; Bechmann, I.; Nitsch, R.;

Kirchhoff, F.; Dirnagl, U.; Priller, J. (November 2000). Bone marrow derived cells differentiate into microglia but not into GFAP-positive astroglia in vitro and in a transgenic mouse model. 30th Annual Meeting of the Society for Neuroscience, New Orleans (Poster).

Wehner, T.; Böntert, M.; Fernandez, F.; Heinze, M.; Prass, K.; Bohsung, J.; de Boer, B.;

Priller, J.; Dirnagl, U. (November 1999). Gfp as a tool to investigate the cns invasion of hematogenous cells under physiological and ischemic conditions. European Students Conference, Berlin (Vortrag und Poster).

Eidesstattliche Erklärung

Die vorliegende Dissertation habe ich selbst ohne unzulässige Hilfe Dritter verfasst. Die von mir benutzten Hilfsmittel und die Literatur habe ich vollständig angegeben. Diese Dissertation ist bislang nicht veröffentlicht, und sie wurde noch von keiner anderen Fakultät abgelehnt.

Berlin, den